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Finding the Fourth Proportional to 290,091.04, 435,309.12 and 156,968.64

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Solution

The fourth proportional to 290,091.04, 435,309.12 and 156,968.64 is: 235,546.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,091.04 : 435,309.12 = 156,968.64 : x
  2. Step 2: Convert to fraction form
    290,091.04/435,309.12 = 156,968.64/x
  3. Step 3: Cross multiply
    290,091.04x = 435,309.12 × 156,968.64
  4. Step 4: Simplify right side
    290,091.04x = 68,329,880,546.00
  5. Step 5: Solve for x
    x = 68,329,880,546.00/290,091.04
  6. Step 6: Final answer
    x = 235,546.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.